corr link

hugo/content/installation/building/unix/third-party.md

@@ -89,7 +89,7 @@ Note: Homebrew installs all packages in <pre>/usr/local</pre>, while
 MacPorts prefers the <pre>/opt/local</pre> folder. Depending on your
 package manager selection, the corresponding path has to be specified
 explicitly during the BornAgain CMake configuration as explained in
-the [build instructions](build-and-install).
+the [build instructions]({{% relref "installation/building/unix" %}}).
 
 Install Homebrew as explained <a href=https://brew.sh/>here</a> and
 then install all BornAgain dependencies by running the following